I understand if someone feels disappointed, because we always thought of an album.
But it's WE. Just look this whole project from outside, it's a great milestone in the history of rock guitar, some kind of "We are the world" sung by dozens of six-chords-maestros, nothing that has EVER happened before.
I also add - apart from the noble cause - it is Mark Knopfler personale, and REAL, Hall of Fame prize. Well deserved, MK!!